#include<stdio.h>
#include<stdlib.h>
#include<string.h>


int main()
{
  char *p1=getenv("USER");
  
  if(strcmp(p1,"root")==0)
  {
    
  printf("USER:%s\n",p1);
  printf("USER:%s\n",p1);
  printf("USER:%s\n",p1);
  printf("USER:%s\n",p1);
  printf("USER:%s\n",p1);
  printf("USER:%s\n",p1);
  printf("USER:%s\n",p1);
  printf("USER:%s\n",p1);
  printf("USER:%s\n",p1);
  printf("USER:%s\n",p1);
  printf("USER:%s\n",p1);
   }
  else 
  {
    printf("权限不足!\n");
  }

  


  return 0;
}
